This issue is triggered on Windows 7 systems that have the Windows Activation Technologies (WAT) installed. WAT is applicable to Windows 7 only.
This issue affects computers for which the following conditions are true:
- The computer is running Windows 7.
- The system uses a KMS host that has a pre-Windows Server 2016 CSVLK installed and activated.
- The computer has the WAT from KB 971033 installed.
In this situation, the system communicates with the Microsoft Activation and Validation Services (AVS) servers by design. If the system cannot successfully communicate with those servers (for example, because of connectivity issues), the validation fails, a "non-genuine" state response is returned, and the system becomes non-genuine. This is one of the reasons the WAT is not intended for Enterprises. See KB 971033 for more information.
Windows 7 KMS clients can also change to a non-genuine state if the KMS host is upgraded to a Windows Server 2016 KMS host key. This is because the older protocol that is used on the AVS servers cannot parse the new information correctly.
The "non-genuine" state response is stored in multiple locations on the local system. After the "non-genuine" state response is stored on the system, the system loses its activation. The removal of the WAT does not cause the removal of those responses or restore a system’s activated state. The new protocol addresses these issues.
Windows 7 systems that do not have the WAT installed do not reach out to AVS servers to validate their "genuine" status.